I just found a fix for the /tmp folder filling up with session files from Eaccelerator.
The trick is to move the cache folder to a larger partition. In our case our /tmp folder is 1GB and it was hitting 90% full regularly.
Login as root :
# pico /usr/lib/php.ini
Find :
eaccelerator.cache_dir=”/tmp/eaccelerator
and change it from /tmp/eaccelerator to /var/cache/eaccelerator and save the file.
# mkdir /var/cache/eaccelerator
#service httpd stop
#rm -rf /tmp/eaccelerator
#service httpd start

You also needed to change the folder permission of eaccelerator at the new location to 1777 for this to work.
You also needed to change the folder permission of eaccelerator at the new location to 1777 for this to work.